code: def updatePositions(self):
      for i in range(dimension):
          self.pos[i] = self.pos[i] + self.velocity[i]
      return
  
file_path: advisor/advisor_server/suggestion/algorithm/particle_swarm_optimization.py
imports: from __future__ import print_function
  import json
  import random
  from suggestion.models import Study
  from suggestion.models import Trial
  from suggestion.algorithm.abstract_algorithm import AbstractSuggestionAlgorithm
label_desc: Use image node_id 2 for calling the Particle obj's underlying member method code with example usage: obj.updatePositions() without return types